Add-ons LLMO SEO Indexing AI Addon 3.1.3 Patch 1

You will need to go into PhpMyAdmin to execute the following query in order to ensure there are no duplicate entries in the Listener after installing the Add-on, and to make sure the correct Listener is used in XenForo.
Open your database and click on the SQL tab. Then copy and paste the following query into the field labeled "Run SQL query/queries on server 'localhost'", and click the Execute button:

PHP:

DELETE FROM xf_code_event_listener
WHERE event_id = 'template_post_render'
  AND callback_class <> 'Sylvain\\LlmoproV313\\Listener\\Template';

INSERT INTO xf_code_event_listener
  (event_id, execute_order, description, callback_class, callback_method, active, addon_id, hint)
VALUES
  ('template_post_render', 10, '', 'Sylvain\\LlmoproV313\\Listener\\Template', 'templatePostRender', 1, 'Sylvain/LlmoproV313', '')
ON DUPLICATE KEY UPDATE
  active = VALUES(active),
  execute_order = VALUES(execute_order),
  callback_method = VALUES(callback_method),
  description = VALUES(description),
  hint = VALUES(hint);

Note: I have tested this query and it works perfectly.